diff --git a/pkgs/tools/networking/quicktun/default.nix b/pkgs/tools/networking/quicktun/default.nix
index f07cfe4d072..ed559f5d5c9 100644
--- a/pkgs/tools/networking/quicktun/default.nix
+++ b/pkgs/tools/networking/quicktun/default.nix
@@ -11,8 +11,6 @@ stdenv.mkDerivation rec {
     sha256 = "0m7gvlgs1mhyw3c8s2dg05j7r7hz8kjpb0sk245m61ir9dmwlf8i";
   };
 
-  CFLAGS = "-fPIE -fPIC -pie -fstack-protector-all -D_FORTIFY_SOURCE=2 -O2 -Wl,-z,relro,-z,now";
-
   buildInputs = [ libsodium ];
 
   phases = [ "unpackPhase" "buildPhase" "installPhase" ];